CVE-2019-11758

Public Exploit

Description

Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.2, and Firefox ESR < 68.2.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.09% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2019-25/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-35/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-33/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1536227 issue tracking exploit vendor advisory
https://usn.ubuntu.com/4335-1/ third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-11758?
CVE-2019-11758 has been scored as a high severity vulnerability.
How to fix CVE-2019-11758?
To fix CVE-2019-11758, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-11758 being actively exploited in the wild?
It is possible that CVE-2019-11758 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11758?
CVE-2019-11758 affects Mozilla Firefox, Mozilla Thunderbird, Mozilla Firefox ESR.
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